Sleeve lime kiln empty-kiln baking method

A technology of sleeve lime kiln and drying kiln, which is applied in the field of sleeve lime kiln, and can solve problems such as local cracks in refractory materials, influence of moisture removal effect, and lack of drying process, etc.

Active Publication Date: 2014-01-15
SHANGHAI BAOYE CONSTR INDAL FURNACE ENG TECH +1
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Problems solved by technology

However, the domestic sleeve kiln baking method has always been the Italian Fukas sleeve kiln drying method, that is, the kiln body is filled with limestone and then baked, which seriously affects the moisture removal effect of t

Method used

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  • Sleeve lime kiln empty-kiln baking method

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Embodiment Construction

[0020] Such as figure 1 As shown, the air drying of the sleeve lime kiln is an important measure to prolong the service life of the refractory material in the kiln and reduce the clogging of the circulation channel after the kiln body is produced. The specific technological process of the empty kiln is as follows:

[0021] (1). Lead gas to the temporary burner of sleeve lime kiln;

[0022] (2). Start the exhaust fan, and control the speed (valve opening) at 5%~10%, so that the negative pressure in the kiln is ≥ -0.05kpa;

[0023] (3). Light the torch, open the valve of the ignition gun, and then open the gas pipeline valve of the temporary burner. After igniting the temporary burners one by one, insert the ash discharge device from the observation hole of the ash discharge device, and fix the burner upward;

[0024] (4). After ignition, when the temperature in the kiln rises to 50°C, the temperature will be increased by 3°C to 5°C per hour. The rising and falling temperatur...

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Abstract

The invention relates to a sleeve lime kiln. A sleeve lime kiln empty-kiln baking method comprises the steps: introducing coal gas to temporary burners of the sleeve lime kiln; starting up an exhaust gas draught fan to allow a negative pressure in the kiln to be greater than or equal to -0.05 kPa; igniting the temporary burners in order, inserting ash discharging devices from ash discharging device observation holes, and making the burners upward and fixing; when the temperature in the kiln rises to 50 DEG C, controlling the temperature rising speed at 3 DEG C to 5 DEG C per hour for rising the temperature; when the temperature rises to 280 to 300 DEG C, carrying out heat preservation; 24 hours later after beginning to baking the kiln, opening burner drainage screws and exhaust gas flue drainage holes, after the burners drain, tightening the screws, and timing for every 4 hours to drain once; carrying out continuous heat preservation until drainage ports have no obvious water, that is to said moisture of a refractory material in the kiln is baked to a reasonable control range; cutting off temporary burner coal gas valves; closing the exhaust gas draught fan; and eight hours later, closing a cooling draught fan. The method can effectively remove the moisture in the refractory material and ensure the high-temperature using performance of the refractory material.

Description

technical field [0001] The invention relates to a sleeve lime kiln, in particular to a kiln drying method for a sleeve lime kiln. Background technique [0002] As the saying goes, three points for building a kiln and seven points for baking. The importance of industrial kiln baking is self-evident. After any industrial furnace is built, its refractory lining must be baked after natural drying and curing before it can be put into production. [0003] The purpose of the sleeve lime kiln drying kiln is to remove the free water and crystal water in the lining body after the construction of the refractory material, so as to obtain the high-temperature performance of the refractory material. However, the domestic sleeve kiln baking method has always been the Italian Fukas sleeve kiln drying method, that is, the kiln body is filled with limestone and then baked, which seriously affects the moisture removal effect of the refractory inner lining and even affects High temperature p...

Claims

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Application Information

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IPC IPC(8): C04B2/10
Inventor 何明伟袁斯浪朱东张贤新
Owner SHANGHAI BAOYE CONSTR INDAL FURNACE ENG TECH
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